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Book Microbial Degradation of Cellulose Acetate Reverse Osmosis Membranes

Download or read book Microbial Degradation of Cellulose Acetate Reverse Osmosis Membranes written by Jon Charles Helander and published by . This book was released on 1987 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Biodegradation of Cellulose Acetate Reverse Osmosis Membranes

Download or read book Biodegradation of Cellulose Acetate Reverse Osmosis Membranes written by Pamela Elizabeth Bell and published by . This book was released on 1981 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research and Development Progress Report

Download or read book Research and Development Progress Report written by United States. Office of Saline Water and published by . This book was released on 1971 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Reverse Osmosis Membrane Research

Download or read book Reverse Osmosis Membrane Research written by H. Lonsdale and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Th i s book had its orl gl n in the sympos i urn on "Polymers for Desalination" sponsored by the Division of Polymer Chemistry of the American Chemical Society and held in September, 1971 in Wash ington D. C. at the 162nd national meeting of the Society. However, the book is not simply the proceedings of that symposium. A num ber of additional papers were contributed by other workers in the field, and the original papers presented at the symposium have, for the most part, been expanded. The book thus represents a broad cross section of membrane research and development activities in the United States and abroad within the field of reverse osmosis. The purposes of the book are to bring attention to important new developments in this field, to suggest what the next generation of reverse osmosis equipment may look like, and to indicate where fur ther research and development are needed. The vast majority of the papers collected here represent work supported by the Office of Saline Water of the United States Department of the Interior, and the emphasis here is clearly on the application of the reverse os mosis process to water purification. However, many of the concepts, methods, and conclusions are expected to be useful in other areas of membrane science and technology.

Book Biofouling and Biocorrosion in Industrial Water Systems

Download or read book Biofouling and Biocorrosion in Industrial Water Systems written by Gill G. Geesey and published by CRC Press. This book was released on 1994-04-15 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofouling and Biocorrosion in Industrial Water Systems presents the state-of-the-science on biofilm processes that relate to fouling corrosion of surfaces used in industrial systems. The book explores engineering and scientific approaches to the characterization and control of biofilm processes, and it introduces new developments in the analysis and understanding of microbial processes. Several chapters have been devoted to examining the new concept of biological and chemical heterogeneity in microbial biofilms and how this has altered the way biofilm behavior is modeled.

Book Selected Water Resources Abstracts

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Membrane Science and Technology

Download or read book Membrane Science and Technology written by J. Flinn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers derived from a conference on membranes held at the Columbus Laboratories of Battelle Memorial Institute in Columbus, Ohio, on October 20 and 21,1969. When a decision is made to sponsor a membrane conference, the problem immediately arises as to what aspect of the technology needs to be emphasized. There were several alternatives from which to choose. The Office of Saline Water, for example, has been sup porting for many years a tremendous volume of research on the desalination of sea and brackish water. In fact, were it not for this effort, the conference which resulted in this book could probably not have been held. Regardless, one could not easily choose to hold a conference on water desalting because the subject is adequately covered in the literature, and yearly conferences are sponsored by the funding agency. Other government agencies, specifically The National Heart and Lung Institutes and The National Institute of Arthritis and Metabolic Diseases, have supported a sizable number of research programs involving the use of membranes for biomedical devices useful in blood oxygenation and kidney augmentation or replacement. Again, these groups have their own outlets for disseminating research results. Still other choices existed among such areas as permeation processes for petroleum separations, advanced or novel membrane process concepts, or characterization of membranes - morphology, permeation prop erties, etc. , - or biological membranes. None of these areas seemed to provide just the right technological emphasis.

Book The Microbial Degradation of Cellulose Acetate

Download or read book The Microbial Degradation of Cellulose Acetate written by Eleftherios Samios and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose acetate is a chemical of great industrial importance. Its uses range from the manufacture of textiles to cigarette filters. Cellulose acetate is not biodegraded easily. The aim of this project was to identify, micro-organisms that would attack cellulose acetate and to propose a possible mechanism for the biodegradation process. Discarded cigarette filters were taken from the street and they were plated onto Sabouraud medium, a selective medium for fungi. The growth observed was on the outside of the filters. The middle portion of discarded cigarette filters was opened asceptically, and added in flasks containing nutrient broth. Eighty percent of the flasks showed no signs of bacteriological growth after 24 hours, showing that the inside of the filters was sterile. It would appear, that cigarette filters are a very effective barrier towards microbial penetration. Cigarette filters were laid on potting compost, sand and tile surfaces, in order to monitor their progress over a period of 12 months. These experiments took place under moist and warm conditions, in order to enhance biological growth. The sand and tile experiments were abandoned after a relatively short period as no obvious changes could be seen. The experiments on compost did not show any visible signs of biodegradation for 7 months. After that period, algal growth developed on the filters exposed to light, and a slight decrease in the degree of substitution (the average number of acetyl groups per anhydroglucose unit) was observed. Cellulose acetates with varying degrees of substitution were synthesised and used as carbon source for the growth of the fungus Aspergillus jilmigatus, a common soil species. Previous experiments had shown that this species was the predominant one growing on the filters. It was found that biodegradability varied with the degree of substitution. The higher the degree of substitution, the slower the biodegradation. Biodegradation could not be shown in cellulose acetate with a degree of substitution of 2.5, the material from which cigarette filters are made. The degradation products were analysed by means of FTIR spectroscopy, IH and \3C NMR, solution viscosity and GPC. From the results obtained, it could be deduced that the biodegradation proceeded by a mild de-acetylation (esterase) prior to de-polymerisation (cellulase).

Book Fundamentals of Membrane Separation Technology

Download or read book Fundamentals of Membrane Separation Technology written by Zhan Wang and published by Elsevier. This book was released on 2024-01-23 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Membrane Separation Technology provides a comprehensive and systematic introduction to this environmentally friendly separation process. Using a structured format that promotes comprehension and implementation each chapter provides overviews, principles, materials and preparation, and industrial applications. Each chapter then concludes with future prospects, references, and end of chapter exercises. Written for students and professionals, this book is an ideal reference for those who wish to better understand the fundamentals and applications of membrane technology. Evaluates present and future applications of more recently developed membranes in energy conversion, biomedical components, controlled release devices, and environmental engineering Provides a comprehensive overview of all aspects of membranes and their applications Includes numerous industrial case studies, practical examples, and questions

Book Saline Water Conversion Report for

Download or read book Saline Water Conversion Report for written by United States. Office of Saline Water and published by . This book was released on 1970 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Saline Water Conversion Report

Download or read book Saline Water Conversion Report written by and published by . This book was released on 1967 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt: